$ git clone -n https://src.fedoraproject.org/rpms/perl-Module-Install-TestBase.git /var/lib/mock/f45-build-24876-606/root/chroot_tmpdir/scmroot/perl-Module-Install-TestBase
Cloning into '/var/lib/mock/f45-build-24876-606/root/chroot_tmpdir/scmroot/perl-Module-Install-TestBase'...
$ git fetch origin e63bbe1b5d1a77f3836a1293242579dae1d7f4c6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Module-Install-TestBase
 * [new ref]         e63bbe1b5d1a77f3836a1293242579dae1d7f4c6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e63bbe1 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild