$ git clone -n https://src.fedoraproject.org/rpms/rubygem-mini_magick.git /var/lib/mock/f42-build-3450960-45482/root/chroot_tmpdir/scmroot/rubygem-mini_magick
Cloning into '/var/lib/mock/f42-build-3450960-45482/root/chroot_tmpdir/scmroot/rubygem-mini_magick'...
$ git fetch origin 726e6a2862f697dc1651b3ff1a322257898adde4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-mini_magick
 * [new ref]         726e6a2862f697dc1651b3ff1a322257898adde4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 726e6a2 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild