$ git clone -n https://src.fedoraproject.org/rpms/perl-HTTP-Tiny.git /var/lib/mock/f41-build-side-1-3127235-39537/root/chroot_tmpdir/scmroot/perl-HTTP-Tiny
Cloning into '/var/lib/mock/f41-build-side-1-3127235-39537/root/chroot_tmpdir/scmroot/perl-HTTP-Tiny'...
$ git fetch origin 41f14f80d680d33ee3852fce07a203f1e1413f81:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-HTTP-Tiny
 * [new ref]         41f14f80d680d33ee3852fce07a203f1e1413f81 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 41f14f8 0.090 bump (rhbz#2325442)