$ git clone -n https://src.fedoraproject.org/rpms/dr_libs.git /var/lib/mock/f42-build-3273912-41313/root/chroot_tmpdir/scmroot/dr_libs
Cloning into '/var/lib/mock/f42-build-3273912-41313/root/chroot_tmpdir/scmroot/dr_libs'...
$ git fetch origin 81725ff3243846928e878210a7c053312b5a4fa9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dr_libs
 * [new ref]         81725ff3243846928e878210a7c053312b5a4fa9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 81725ff Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild