$ git clone -n https://src.fedoraproject.org/rpms/libcoap.git /var/lib/mock/f40-build-785448-133955/root/chroot_tmpdir/scmroot/libcoap
Cloning into '/var/lib/mock/f40-build-785448-133955/root/chroot_tmpdir/scmroot/libcoap'...
$ git fetch origin 102a1f38a1c40afe19aff6de1b946ed4ad2c3cd4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libcoap
 * [new ref]         102a1f38a1c40afe19aff6de1b946ed4ad2c3cd4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 102a1f3 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild